diff --git a/.github/workflows/server-parity.yml b/.github/workflows/server-parity.yml
index c398c7358..84a5eeebd 100644
--- a/.github/workflows/server-parity.yml
+++ b/.github/workflows/server-parity.yml
@@ -469,7 +469,7 @@ jobs:
             -e COMPOSER_HOME=/tmp/composer -v "$PWD:/source" -w /source "$image" \
             install --working-dir=scripts/conformance/server-parity --no-interaction --no-progress
           docker run -d --name "$RESOURCE_SCOPE-php" --network "$RESOURCE_SCOPE" --network-alias=parity-php \
-            --user=1000:1000 --cpus=1 --memory=512m --memory-swap=512m \
+            --user=1000:1000 --cpus=1 --memory=512m --memory-swap=512m --tmpfs /state \
             -e DB_CONNECTION=mysql -e DB_HOST=parity-mysql -e DB_DATABASE=php_ref \
             -e DB_USERNAME=root -e DB_PASSWORD=parity-disposable-password \
             -e CACHE_STORE=file -e QUEUE_CONNECTION=database -e DW_AUTH_TOKEN=parity-test-token "$image"
@@ -502,14 +502,14 @@ jobs:
             -e DW_RUST_EXPERIMENTAL=1 -e DW_AUTH_TOKEN=parity-test-token -e DW_BIND_ADDRESS=0.0.0.0:8080 \
             -e DB_CONNECTION=mysql -e DB_HOST=parity-mysql -e DB_DATABASE=native_ref \
             -e DB_USERNAME=root -e DB_PASSWORD=parity-disposable-password \
-            -v "$PWD/rust-target:/target:ro" --entrypoint /target/debug/durable-workflow-server \
+            -v "$PWD/rust-target:/target:ro" --tmpfs /state --entrypoint /target/debug/durable-workflow-server \
             mirror.gcr.io/library/rust@sha256:ba81bc3eaa4422af576c0262515d96b0111a628a6ccc2c86557cf55c9a4bbee0
           docker run -d --name "$RESOURCE_SCOPE-native-b" --network "$RESOURCE_SCOPE" --network-alias=parity-native-b \
             --user="$(id -u):$(id -g)" --cpus=1 --memory=256m --memory-swap=256m \
             -e DW_RUST_EXPERIMENTAL=1 -e DW_AUTH_TOKEN=parity-test-token -e DW_BIND_ADDRESS=0.0.0.0:8080 \
             -e DB_CONNECTION=mysql -e DB_HOST=parity-mysql -e DB_DATABASE=native_ref \
             -e DB_USERNAME=root -e DB_PASSWORD=parity-disposable-password \
-            -v "$PWD/rust-target:/target:ro" --entrypoint /target/debug/durable-workflow-server \
+            -v "$PWD/rust-target:/target:ro" --tmpfs /state --entrypoint /target/debug/durable-workflow-server \
             mirror.gcr.io/library/rust@sha256:ba81bc3eaa4422af576c0262515d96b0111a628a6ccc2c86557cf55c9a4bbee0
           ready=0
           for attempt in $(seq 1 30); do
@@ -634,7 +634,7 @@ jobs:
             -e DW_RUST_EXPERIMENTAL=1 -e DW_AUTH_TOKEN=parity-test-token -e DW_BIND_ADDRESS=0.0.0.0:8080 \
             -e DB_CONNECTION=mysql -e DB_HOST=parity-mysql -e DB_DATABASE=native_ref \
             -e DB_USERNAME=root -e DB_PASSWORD=parity-disposable-password \
-            -v "$PWD/rust-target:/target:ro" --entrypoint /target/debug/durable-workflow-server \
+            -v "$PWD/rust-target:/target:ro" --tmpfs /state --entrypoint /target/debug/durable-workflow-server \
             mirror.gcr.io/library/rust@sha256:ba81bc3eaa4422af576c0262515d96b0111a628a6ccc2c86557cf55c9a4bbee0
           ready=0
           for attempt in $(seq 1 30); do
@@ -967,7 +967,7 @@ jobs:
             -e COMPOSER_HOME=/tmp/composer -v "$PWD:/source" -w /source "$image" \
             install --working-dir=scripts/conformance/server-parity --no-interaction --no-progress
           docker run -d --name "$RESOURCE_SCOPE-php" --network "$RESOURCE_SCOPE" --network-alias=parity-php \
-            --user=1000:1000 --cpus=1 --memory=512m --memory-swap=512m \
+            --user=1000:1000 --cpus=1 --memory=512m --memory-swap=512m --tmpfs /state \
             -e DB_CONNECTION=pgsql -e DB_HOST=parity-pg -e DB_DATABASE=php_ref \
             -e DB_USERNAME=parity -e DB_PASSWORD=parity-disposable-password \
             -e CACHE_STORE=file -e QUEUE_CONNECTION=database -e DW_AUTH_TOKEN=parity-test-token "$image"
@@ -999,14 +999,14 @@ jobs:
             -e DW_RUST_EXPERIMENTAL=1 -e DW_AUTH_TOKEN=parity-test-token -e DW_BIND_ADDRESS=0.0.0.0:8080 \
             -e DB_CONNECTION=pgsql -e DB_HOST=parity-pg -e DB_DATABASE=native_ref \
             -e DB_USERNAME=parity -e DB_PASSWORD=parity-disposable-password \
-            -v "$PWD/rust-target:/target:ro" --entrypoint /target/debug/durable-workflow-server \
+            -v "$PWD/rust-target:/target:ro" --tmpfs /state --entrypoint /target/debug/durable-workflow-server \
             mirror.gcr.io/library/rust@sha256:ba81bc3eaa4422af576c0262515d96b0111a628a6ccc2c86557cf55c9a4bbee0
           docker run -d --name "$RESOURCE_SCOPE-native-b" --network "$RESOURCE_SCOPE" --network-alias=parity-native-b \
             --user="$(id -u):$(id -g)" --cpus=1 --memory=256m --memory-swap=256m \
             -e DW_RUST_EXPERIMENTAL=1 -e DW_AUTH_TOKEN=parity-test-token -e DW_BIND_ADDRESS=0.0.0.0:8080 \
             -e DB_CONNECTION=pgsql -e DB_HOST=parity-pg -e DB_DATABASE=native_ref \
             -e DB_USERNAME=parity -e DB_PASSWORD=parity-disposable-password \
-            -v "$PWD/rust-target:/target:ro" --entrypoint /target/debug/durable-workflow-server \
+            -v "$PWD/rust-target:/target:ro" --tmpfs /state --entrypoint /target/debug/durable-workflow-server \
             mirror.gcr.io/library/rust@sha256:ba81bc3eaa4422af576c0262515d96b0111a628a6ccc2c86557cf55c9a4bbee0
           ready=0
           for attempt in $(seq 1 30); do
@@ -1131,7 +1131,7 @@ jobs:
             -e DW_RUST_EXPERIMENTAL=1 -e DW_AUTH_TOKEN=parity-test-token -e DW_BIND_ADDRESS=0.0.0.0:8080 \
             -e DB_CONNECTION=pgsql -e DB_HOST=parity-pg -e DB_DATABASE=native_ref \
             -e DB_USERNAME=parity -e DB_PASSWORD=parity-disposable-password \
-            -v "$PWD/rust-target:/target:ro" --entrypoint /target/debug/durable-workflow-server \
+            -v "$PWD/rust-target:/target:ro" --tmpfs /state --entrypoint /target/debug/durable-workflow-server \
             mirror.gcr.io/library/rust@sha256:ba81bc3eaa4422af576c0262515d96b0111a628a6ccc2c86557cf55c9a4bbee0
           ready=0
           for attempt in $(seq 1 30); do
diff --git a/rust/src/runtime/mysql.rs b/rust/src/runtime/mysql.rs
index e4ab0a4fc..60b63da41 100644
--- a/rust/src/runtime/mysql.rs
+++ b/rust/src/runtime/mysql.rs
@@ -1389,7 +1389,8 @@ mod tests {
                 "upgrade_source_external_payloads_unsupported",
             ),
             (
-                "INSERT INTO workflow_schedules(id,schedule_id,namespace,spec,action,status,overlap_policy,jitter_seconds) VALUES ('s','nightly','default','{\"cron_expressions\":[\"0 2 * * *\"],\"timezone\":\"UTC\"}','{\"workflow_type\":\"echo\",\"task_queue\":\"default\"}','active','skip',0)",
+                // Native runs cron schedules; search attributes are still refused.
+                "INSERT INTO workflow_schedules(id,schedule_id,namespace,spec,action,status,overlap_policy,jitter_seconds,search_attributes) VALUES ('s','nightly','default','{\"cron_expressions\":[\"0 2 * * *\"],\"timezone\":\"UTC\"}','{\"workflow_type\":\"echo\",\"task_queue\":\"default\"}','active','skip',0,'{\"Customer\":\"acme\"}')",
                 "upgrade_source_schedules_unsupported",
             ),
         ] {
diff --git a/rust/src/runtime/postgres.rs b/rust/src/runtime/postgres.rs
index 15d9d5082..0744d1ac0 100644
--- a/rust/src/runtime/postgres.rs
+++ b/rust/src/runtime/postgres.rs
@@ -922,7 +922,8 @@ mod tests {
                 "upgrade_source_external_payloads_unsupported",
             ),
             (
-                "INSERT INTO workflow_schedules(id,schedule_id,namespace,spec,action,status,overlap_policy,jitter_seconds) VALUES ('s','nightly','default','{\"cron_expressions\":[\"0 2 * * *\"],\"timezone\":\"UTC\"}','{\"workflow_type\":\"echo\",\"task_queue\":\"default\"}','active','skip',0)",
+                // Native runs cron schedules; search attributes are still refused.
+                "INSERT INTO workflow_schedules(id,schedule_id,namespace,spec,action,status,overlap_policy,jitter_seconds,search_attributes) VALUES ('s','nightly','default','{\"cron_expressions\":[\"0 2 * * *\"],\"timezone\":\"UTC\"}','{\"workflow_type\":\"echo\",\"task_queue\":\"default\"}','active','skip',0,'{\"Customer\":\"acme\"}')",
                 "upgrade_source_schedules_unsupported",
             ),
         ] {